<template>
     
  <div class="camera_outer">
    <div class="card_header">
      <span class="card_wenzi">卡证识别</span>
    </div>
    <div class="assas">
      <div class="img_bg_camera">
        <video
          id="videoCamera"
          :width="videoWidth"
          :height="videoHeight"
          autoplay
        ></video>
        <canvas
          style="display: none"
          id="canvasCamera"
          :width="videoWidth"
          :height="videoHeight"
        ></canvas>
      </div>
      <div class="img_bg_camera">
        <span v-if="!zimgSrc" class="sfz_show">
          <el-button
            type="primary"
            v-if="uploadzf == null || uploadzf == false"
            @click="uploadzf = true"
            >点我选择上传身份证正面</el-button
          >

          <el-button type="primary" v-if="uploadzf == true"
            >当前上传正面</el-button
          >
        </span>
        <img :src="zimgSrc" alt="" class="tx_img" />
        <el-button
          type="primary"
          class="del_img"
          v-if="zimgSrc != ''"
          @click="zimgSrc = ''"
          >删除</el-button
        >
      </div>

      <div class="img_bg_camera">
        <span v-if="!cimgSrc" class="sfz_show">
          <el-button
            type="primary"
            v-if="uploadzf == null || uploadzf == true"
            @click="uploadzf = false"
            >点我选择上传身份证侧面</el-button
          >
          <el-button type="primary" v-if="uploadzf == false"
            >当前上传反面</el-button
          >
        </span>

        <img :src="cimgSrc" alt="" class="tx_img" />
        <el-button
          type="primary"
          class="del_img"
          v-if="cimgSrc != ''"
          @click="cimgSrc = ''"
          >删除</el-button
        >
        <!-- <el-button
          type="primary"
          class="del_img"
          >删除</el-button
        > -->
      </div>
    </div>
    <div style="margin-top: 55px">
      <el-button type="primary" @click="getCompetence()">打开摄像头</el-button>
      <el-button type="primary" @click="stopNavigator()">关闭摄像头</el-button>
      <el-button type="primary" @click="setImage()">拍照</el-button>
      <el-button type="primary" @click="addSchoolroll()">上传</el-button>
    </div>
    <div v-if="this.shenfenxinxi" style="margin: 15px">
      <el-descriptions class="margin-top" title="身份信息" :column="3" border>
        <el-descriptions-item>
          <template slot="label">
            <i class="el-icon-user"></i>
            姓名
          </template>
          {{ this.dataxinxi.Name }}
        </el-descriptions-item>

        <el-descriptions-item>
          <template slot="label">
            <i class="el-icon-user"></i>
            性别
          </template>
          {{ this.dataxinxi.Sex }}
        </el-descriptions-item>

        <el-descriptions-item>
          <template slot="label">
            <i class="el-icon-user"></i>
            出生年月
          </template>
          {{ this.dataxinxi.Birth }}
        </el-descriptions-item>

        <el-descriptions-item>
          <template slot="label">
            <i class="el-icon-user"></i>
            名族
          </template>
          {{ this.dataxinxi.Nation }}
        </el-descriptions-item>

        <el-descriptions-item>
          <template slot="label">
            <i class="el-icon-user"></i>
            地址
          </template>
          {{ this.dataxinxi.Address }}
        </el-descriptions-item>

        <el-descriptions-item>
          <template slot="label">
            <i class="el-icon-user"></i>
            身份证号
          </template>
          {{ this.dataxinxi.IdNum }}
        </el-descriptions-item>

        <el-descriptions-item>
          <template slot="label">
            <i class="el-icon-user"></i>
            发证机关
          </template>
          {{ this.dataxinxi.Authority }}
        </el-descriptions-item>

        <el-descriptions-item>
          <template slot="label">
            <i class="el-icon-user"></i>
            证件有效期
          </template>
          {{ this.dataxinxi.ValidDate }}
        </el-descriptions-item>
      </el-descriptions>
    </div>
  </div>
</template>

<script>
import { addSchoolroll } from "network/api/schoolroll";
export default {
  props: {},
  data() {
    return {
      videoWidth: 300,
      videoHeight: 300,
      // imgSrc: "",
      zimgSrc: "",
      cimgSrc: "",
      thisCancas: null,
      thisContext: null,
      thisVideo: null,
      uploadzf: null,
      dataxinxi: {},
      shenfenxinxi: false,
    };
  },
  mounted() {
    // this.getCompetence();
  },
  watch: {
    dataxinxi: function (val) {
      console.log(111111111111111111111, val);
      if (val != {} && val != undefined && val != "") {
        this.shenfenxinxi = true;
      }
    },
  },
  methods: {
    // 调用权限（打开摄像头功能）
    getCompetence() {
      var _this = this;
      this.thisCancas = document.getElementById("canvasCamera");
      this.thisContext = this.thisCancas.getContext("2d");
      this.thisVideo = document.getElementById("videoCamera");
      // 旧版本浏览器可能根本不支持mediaDevices，我们首先设置一个空对象
      console.log(123, navigator);
      if (navigator.mediaDevices === undefined) {
        navigator.mediaDevices = {};
      }
      // 一些浏览器实现了部分mediaDevices，我们不能只分配一个对象
      // 使用getUserMedia，因为它会覆盖现有的属性。
      // 这里，如果缺少getUserMedia属性，就添加它。
      // if (navigator.mediaDevices.getUserMedia === undefined) {
      //   navigator.mediaDevices.getUserMedia = function (constraints) {
      //     // 首先获取现存的getUserMedia(如果存在)
      //     var getUserMedia =
      //       navigator.webkitGetUserMedia ||
      //       navigator.mozGetUserMedia ||
      //       navigator.getUserMedia;
      //     // 有些浏览器不支持，会返回错误信息
      //     // 保持接口一致
      //     if (!getUserMedia) {
      //       return Promise.reject(
      //         new Error("getUserMedia is not implemented in this browser")
      //       );
      //     }
      //     // 否则，使用Promise将调用包装到旧的navigator.getUserMedia
      //     return new Promise(function (resolve, reject) {
      //       getUserMedia.call(navigator, constraints, resolve, reject);
      //     });
      //   };
      // }
      if (navigator.mediaDevices.getUserMedia === undefined) {
    navigator.mediaDevices.getUserMedia = function(constraints) {
        var getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia || navigator.oGetUserMedia;
        if (!getUserMedia) {
            return Promise.reject(new Error('getUserMedia is not implemented in this browser'));
        }
        return new Promise(function(resolve, reject) {
            getUserMedia.call(navigator, constraints, resolve, reject);
        });
    }
}
      var constraints = {
        audio: false,
        video: {
          width: this.videoWidth,
          height: this.videoHeight,
          transform: "scaleX(-1)",
        },
      };
      console.log(navigator.mediaDevices.getUserMedia(constraints),123,constraints);
      navigator.mediaDevices
        .getUserMedia(constraints)
        .then(function (stream) {
          // 旧的浏览器可能没有srcObject
          if ("srcObject" in _this.thisVideo) {
            console.log(1222);
            _this.thisVideo.srcObject = stream;
          } else {
            console.log(2222);
            // 避免在新的浏览器中使用它，因为它正在被弃用。
            _this.thisVideo.src = window.URL.createObjectURL(stream);
          }
          _this.thisVideo.onloadedmetadata = function (e) {
            _this.thisVideo.play();
          };
        })
        .catch((err) => {
          console.log("打开摄像头报错");
          console.log(err);
        });
    },
    //  绘制图片（拍照功能）
    setImage() {
      if (this.thisVideo.srcObject.active == true) {
        if (this.uploadzf == null) {
          alert("请选择上传类型");
          return;
        }
        var _this = this;
        // 点击，canvas画图
        //   console.log(_this.thisVideo.autoplay)

        _this.thisContext.drawImage(
          _this.thisVideo,
          0,
          0,
          _this.videoWidth,
          _this.videoHeight
        );
        // 获取图片base64链接
        var image = this.thisCancas.toDataURL("image/png");

        if (_this.uploadzf) {
          _this.zimgSrc = image;
          this.uploadzf = null;
        } else if (!_this.uploadzf) {
          _this.cimgSrc = image;
          this.uploadzf = null;
        }
        //   this.$emit("refreshDataList", this.imgSrc);
      } else {
        alert("请打开摄像头");
      }
    },
    // base64转文件
    dataURLtoFile(dataurl, filename) {
      var arr = dataurl.split(",");
      var mime = arr[0].match(/:(.*?);/)[1];
      var bstr = atob(arr[1]);
      var n = bstr.length;
      var u8arr = new Uint8Array(n);
      while (n--) {
        u8arr[n] = bstr.charCodeAt(n);
      }
      return new File([u8arr], filename, { type: mime });
    },
    // 关闭摄像头
    stopNavigator() {
      this.thisVideo.srcObject.getTracks()[0].stop();
    },
    async addSchoolroll() {
      // console.log(1, this.imgSrc, 2, this.zimgSrc, 3, this.cimgSrc);
      if (this.zimgSrc == "" && this.cimgSrc == "") {
        alert("请上传正and测面图片");
      } else if (this.zimgSrc == "") {
        alert("请上传正面图片");
      } else if (this.cimgSrc == "") {
        alert("请上传侧面图片");
      } else {
        const res = await addSchoolroll({
          zimgSrc: this.zimgSrc,
          cimgSrc: this.cimgSrc,
        });
        console.log(res);
        if (res.status == "Yes") {
          this.$message.success(res.msg);
          this.dataxinxi = res.data;
        } else {
          this.$message.error(res.msg);
        }
      }
    },
  },
};
</script>

<style lang="scss" scoped>
.del_img {
  margin-left: 250px;
}
.card_header {
  height: 60px;
  text-align: center;
  font-size: 30px;
  background: #ccff00;
}
.card_header .card_wenzi {
  line-height: 60px;
}
.camera_outer {
  position: relative;
  overflow: hidden;
  background-size: 100%;
}
.assas {
  display: flex;
  height: 350px;
}
.camera_outer video,
canvas,
.tx_img {
  -moz-transform: scaleX(-1);
  -webkit-transform: scaleX(-1);
  -o-transform: scaleX(-1);
  transform: scaleX(-1);
}
.camera_outer .btn_camera {
  position: absolute;
  bottom: 4px;
  left: 0;
  right: 0;
  height: 50px;
  background-color: rgba(0, 0, 0, 0.3);
  line-height: 50px;
  text-align: center;
  color: #ffffff;
}
.camera_outer .bg_r_img {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  top: 0;
}

.sfz_show {
  text-align: center;
  line-height: 300px;
}
.camera_outer .img_bg_camera {
  border: 1px solid white;
  flex: 1;
}
.camera_outer .img_bg_camera img {
  width: 300px;
  height: 300px;
}
.camera_outer .img_bg_camera .img_btn_camera {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50px;
  line-height: 50px;
  text-align: center;
  background-color: rgba(0, 0, 0, 0.3);
  color: #ffffff;
}
.camera_outer .img_bg_camera .img_btn_camera .loding_img {
  width: 50px;
  height: 50px;
}
</style>
